package com.walmartlabs.concord.server;

/*-
 * *****
 * Concord
 * -----
 * Copyright (C) 2017 - 2019 Walmart Inc.
 * -----
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =====
 */

import javax.inject.Named;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.UUID;

/**
 * @deprecated left for backward compatibility. Redirects all requests to
 * {@link com.walmartlabs.concord.server.process.ProcessResource#getLog(UUID, String)}
 */
@Named
@WebServlet("/logs/*")
public class LogServlet extends HttpServlet {

    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String uri = req.getRequestURI();

        int i = uri.lastIndexOf("/");
        int len = uri.length();
        if (i < 0 || i + 1 >= len || !uri.endsWith(".log")) {
            throw new ServletException("Unknown request: " + uri);
        }

        String instanceId = uri.substring(i + 1, len - 4);
        RequestDispatcher dispatcher = req.getRequestDispatcher("/api/v1/process/" + instanceId + "/log");
        dispatcher.forward(req, resp);
    }
}
